Zeron Fastners
ASTM A325 Socket Head Cap Screws
ASTM A325 Socket Head Cap Screws (SHCS) are high-precision threaded fasteners characterized by a cylindrical head and an internal hexagonal drive. Although the A325 specification defines structural hex bolts, these screws are manufactured to meet the same stringent high-strength material requirements—quenched and tempered medium carbon steel—to deliver exceptional tensile strength and high clamping force. SHCS are ideal for applications where the fastener must be flush or recessed, such as in machine tools, heavy industrial equipment, and structural joints with limited space. Zeron Fastners ensures A325-grade material properties are maintained in these screws for reliable, high-load performance.
Related Products
ASTM A325 Type 1 Bolting Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.30 – 0.52 |
| Manganese (Mn) | 0.60 min |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.045 max |
| Silicon (Si) | 0.10 min |
| Boron (B) | Optional |
ASTM A325 Socket Head Cap Screws Mechanical Properties
| Property | 1/2" to 1" Diameter (min) | 1-1/8" to 1-1/2" Diameter (min) |
|---|---|---|
| Tensile Strength | 120 ksi (827 MPa) | 105 ksi (724 MPa) |
| Yield Strength (0.2% Offset) | 92 ksi (634 MPa) | 81 ksi (558 MPa) |
| Elongation in 4D | 14% | 14% |
| Hardness (Brinell max) | 319 HB | 319 HB |